| 释义 |
tectosphere Geol.|ˈtɛktəʊsfɪə(r)|
[f. Gr. τέκτ-ων, -ον- carpenter, builder + -o + sphere n.]
That part of the earth which moves in coherent sections during plate-tectonic activity (see quot. 19791). Hence tectoˈspheric a., of or pertaining to the tectosphere.
Tectosphere is sometimes confused in dicts. with tektosphere.
1968Jrnl. Geophysical Res. LXXIII. 1980/2 The required strength [to maintain rigidity] cannot be in the crust alone; the oceanic crust is too thin for this. We instead favor a strong tectosphere, perhaps 100 km thick, sliding over a weak asthenosphere. 1969W. M. Elsasser in S. K. Runcorn Applic. Mod. Physics to Earth & Planetary Interiors 223 Horizontal sliding of the top layer, here called the ‘tectosphere’, can be more easily achieved than circulation in the material underneath. 1979Sci. Amer. Jan. 76/3 Under the oceans the tectosphere and the lithosphere are..identical in spatial extent... Under the continents, however,..the cratonic tectosphere extends below the lithosphere, perhaps to depths of 400 kilometers or more. Ibid., Tectospheric thickness also correlates with crustal age. |